Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
ASSETS:
Fixed maturities - available for sale, at market value (amortized cost: 2016, $5,617,412; 2015, $5,335,472)	$ 5,768,749	$ 5,356,477
Fixed maturities - available for sale, at fair value		2,102
Equity securities - available for sale, at fair value	976,879	1,215,377
Short-term investments	387,705	563,536
Other invested assets (cost: 2016, $604,512; 2015, $450,154)	604,512	450,154
Other invested assets, at fair value	1,772,458	1,773,214
Cash	229,927	155,429
Total investments and cash	9,740,230	9,516,289
Note receivable - affiliated	250,000	250,000
Accrued investment income	42,454	41,727
Premiums receivable	1,119,371	1,129,656
Reinsurance receivables - unaffiliated	814,866	716,982
Reinsurance receivables - affiliated	3,676,433	3,742,105
Funds held by reinsureds	185,170	176,712
Deferred acquisition costs	72,696	92,651
Prepaid reinsurance premiums	750,713	772,686
Other assets	272,767	256,395
TOTAL ASSETS	16,924,700	16,695,203
LIABILITIES:
Reserve for losses and loss adjustment expenses	8,247,764	7,940,720
Unearned premium reserve	1,264,499	1,349,799
Funds held under reinsurance treaties	106,611	101,531
Losses in the course of payment	128,048	125,592
Commission reserves	61,254	51,873
Other net payable to reinsurers	860,872	1,225,260
4.868% Senior notes due 6/1/2044	396,654	396,594
6.6% Long term notes due 5/1/2067	236,413	236,364
Accrued interest on debt and borrowings	3,537	3,537
Income taxes	138,621	68,024
Unsettled securities payable	59,891	15,040
Other liabilities	256,483	249,658
Total liabilities	11,760,647	11,763,992
Commitments and Contingencies (Note 5)
STOCKHOLDER'S EQUITY:
Common stock, par value: $0.01; 3,000 shares authorized; 1,000 shares issued and outstanding (2016 and 2015)
Additional paid-in capital	382,537	374,789
Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit) of $29,988 at 2016 and ($33,458) at 2015	55,682	(62,136)
Retained earnings	4,725,834	4,618,558
Total stockholder's equity	5,164,053	4,931,211
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY	$ 16,924,700	$ 16,695,203